diff --git a/unisocket.js b/unisocket.js
index ba7ef2f..e43eb4b 100644
--- a/unisocket.js
+++ b/unisocket.js
@@ -36,11 +36,11 @@ export default {
       my.socket.onMessage(({ data }) => {
         // 在这里统一分发消息（用户端通常不需要返回结果给服务器，因此不用 rpc 模式，而用 event 模式。
         try {
-          let dataObj = JSON.parse(data)
-          console.log('WebSocket onMessage for skevent: ', dataObj.skevent)
-          let listeners = my.listeners[dataObj.skevent] || []
+          let { skevent, ...apiWhat } = JSON.parse(data)
+          console.log('WebSocket onMessage for skevent: ', skevent)
+          let listeners = my.listeners[skevent] || []
           for (let listener of listeners) {
-            listener(dataObj)
+            listener(apiWhat)
           }
         } catch (exception) {
           console.log(new Date().toJSON(), 'unknown message', data)
@@ -57,6 +57,11 @@ export default {
       delete my.reconnecting
     }, 2000)
   },
+  initListener (skevent, listener) {
+    // 当该 skevent 尚不具有任何 listener 时，添加本 listener
+    my.listeners[skevent]?.length > 0 || this.addListener(skevent, listener)
+    return this
+  },
   addListener (skevent, listener) {
     if (Array.isArray(my.listeners[skevent]) && typeof listener === 'function') {
       my.listeners[skevent].push(listener)